John kirby



UNITED STATES PATENT OFFICE.

`JOHN KIEBY, JR., orv LUDLOw, KENTUOKY, AssIGnOE To Postr a OO., O

OinoiNNATI, OHIO. y

LAMP.

SPECIFICATION forming `part of Letters Patent No.,274,003, dated March 13, 1883. Application inea July 11, ieee. (No modem To all wh'om it may concern:

Be it known thatV I, JOHN KIRBY, Jr., of Ludlow, Kenton county, Kentucky, have in- ,vented a certain new and useful Improvement in Lamps, of which the following is a full, exact, and clear description, reference being had to the accompanying drawings, forming part ot' this specilcation, in which- Figure 1 is a section of one-halt' of lamp.

1o Fig. 2 is a plan of oil-reservoir and air-chamber, showing air and oil tubes leading to burnv ers on each side.

Similar letters of reference denote the same parts. I5 A is an oil-reservoir; B, air-chamber; C, cap closing bottom of air-chamber; D,flange lou bottom of reservoir; Op', screw on cap; E, air-tubes leading to inclosed burner; F, y inclosingair-tube of burner; H, inclosed wick- 2O tube; K, oil-tube leading from reservoir4 to wick-tube; Y, air-'space between F and H; Z, perforations in tube E. X indicates points where ange is cutaway; T, air-space betweeen reservoir and air-chamber; N, pro- 2 5 jecting grooved ring on upper surface ot' air chamber; R, spring-lug ot' coupling-ring; S, coupling-ring; L, metallic cap titted on tube F5. M, chimney fitting into metallic cap L.

My invention relates to lamps, more espe- `3o cially to the class known as railway-car lainps; and iticonsists in making a lamp as follows: I Y

I place the oil-reservoir A within the airchamher B, so that there is an air-space, T,

between them. The reservoir is connected to the air-chamber bya flange, D, ou its bott tom edge. This flange is perforated with airholes, and on opposite sides, wherel the airtube E leads ott' to the burner-tube F, it is 4o cut out, as shown at a.' in Figs. l and 2. The bottom of the air-chamber is a detachable cup,

U, held to the oil-reservoir by the screw c. The apertures X in flange D insure the chang ing ot' the air between the bottom ot' the reservoir A and the bottom of the cylinder B. These apertures are not provided as conduits of air. to the tubes E,.but as a. means of keeping an equal temperature on all sides of the reservoir A.V I then pass the air-tube E through the side of the air-chamber B with an air-tight joint, and attach it directly (usually by solder)'to the side of the inclosed reservoir. This tube E, between its point of attachment to the reservoir'and the point where it passes through the side Vof the air- 5'5 chamber, is perforated with air-holes, as at Z, Figs. 1 and"2. I join the air-tube to the air-chamber in this way because it is a lrm attachment; but the tube may be soldered to the side of the airchamber or fit `onto a-6o boss on the side ot' the chamber. This tube E leads to the air-tuhe F of the burner, to which it is connected by an air-tight joint. Tube F incloses the oil-and-wick tube H of the burner. Between these burner-tubes is an air-space, Y. The oil passes from the reservoir to the wick-tube H through the pipe K. (Shown in Fig. l and dotted lines in Fig.

2.) Tube F is closed against the admission ot' air at its upper end by a metallic cap, L, 7o into which the chimney M tits. Thus the air admitted through the top of the air-chamber to support combustion at the wick is forced to come through the air-chamberl and around the reservoir.' r

I am aware that air and oil tubes leading t'rom a reservoir of oil to burners on each side thereof are in use in railway-car lamps.

I do not claim them, broadly, but in connection with my reservoir inclosed in au' air- 8o chamber.

The air-chamber B, as shown in the drawings, has a grooved ring, N, projecting' from its upper sur-face. The air-chamber, with the parts of the lamp attached to it, is connected to the other parts ot' the lamp and to the supporting-brackets V by lugs B on a couplingring, b, engaging in this grooved ring.

The drawings show a coupling-ring, with spring-lugs of my invention, for which I am 9o aboutto apply for Letters Patent.Y Any other suitable coupling may be used.

Having thus described my invention, what I claim as new, .and desire to secure by Letters Patent, is as follows: Y g5 1. In a lamp',an oi1-reservoir inclosed in an air chamber having a grooved ring project- The foregoing specification of my invention ing from its upper surface and detachable from vsigned by me this 7th day'of July, A. D. 1882. xo its supports, in combination with a couplingl ring, substantially as described. JOHN KIRBY, J R. 5 2. In a lamp, an oilareservoir inclosed in an air-chamber detachable'from its supports, in Witnesses: combination with a coupling-ring and the snp- RICHARD'L. AYER, porting-brackets, substantially as described. J EPTHA GARRARD. 

